Interlocking packing-sleeve for rotary valves.



S. GROSSLEY.

mrfmocmms PACKING SLEEVE FOR ROTARY VALVES.

APPLICATION NLE!) JAN. 24, 1916.

flntented May 9, 1916.

. of the packing sleeve sections.

19, said ports being arranged in staggered relation with respect to eachother in accor-dance with the arrangement of the ports in the valve soas to register with the latter.

Each sleeve section is provided at one end4 with an inwardly extendingflange 20 and at its opposite end with an inwardly extending flange 21,said flanges forming packing `rings which interlock with the grooves inthe valve. The flanges 21 are annularly recessed, as at 22, in order toreceive the flange 20 of the juxtaposed packing section 14. It will beseen that by such construction, the flange 21 is in engagement with thebottom and side walls of the valve, while the flange 20 adjacent theretois in engagement with one wall. of the groove and the walls of therecess 22. The cut 18 is so situated that all the work in the cylinderhas been completed before the port opening registers with a cylinderport. These cuts 18 are formed by angularlv cutting through a sleevetoform overlapping tongues 23 and 24, respectively'7 -it being notedthat the in proper relation with respect to the bodyA of the valve, sothat their port openings will register at all times with the portopenings of the valve. This allows the packing sleeve to have an equalexpansion and tension in the valve chamber, it being noted that thevalve is supported at both ends. on ballbearings.'

In order to illustrate one manner of interlocking the valve sectionswith the gvalve, I have' shown each valve section as being providedvwith a plurality of apertures 25 which are of greater diameter than thefalstening devices 26, which pass therethrough and are connected withthe valve, so that each packing section is permitted to have relativemovement with respect to the valve, in both a longitudinal andacircumferential direction. The packing sleeve sections are interlockedin place by means of the split rings 15 which provide for a tightt andprovide at such points the same packing action as is present betweenjuxtaposed ends Owing to the novel construction and arrangement of theflanges of the packing sleeve, a tight joint will be formed between theexhaust ports 27 and the intake ports of the cylinder, so that leakagewill be prevented through such ports.

It is also within the scope of my invention ving a bushing for the valveand havin to have the side walls of a packing sleeve section eccentricat their inner periphery, as seen in Fig. 7, the advantage of which isAthat the free ends of the packing sleeve are more resilient and expandmore freely than if the sleeve sections were of uniform thicknessthroughout. Otherwise, this embodiment of my invention conforms inconstruction and arrangement to that seen in the other ligures of thedrawing.

When an engine cylinder is under compression and also after theexplosion takes place, it will be seen that there is no likelihood ofany lea-kagebetween the engine cylinder and the-valve port, due to thenovel construction and arrangement of the packing 'Sleeve and the mannerin which it forms a tight joint betweenV such ports at such times. I amthus enabled to hold the compressionin the cylinder at all requisiteperiods. Furthermore, the packing sleeveforms a uniform bearing andserves to automatically take up any wear which takes place within' thevalve chamber, thereby preventing leakage between the valveports.

In accordance with my present invention, I employ a packing sleeve whichconsists of a series of split rings which have-the double function ofpacking the valve and also provides a bushing and bearing for the valve,and since the valve is supported at its ends on anti-frictionbearings,it will be apparent that the packing sleeve is free at all times toexpand and contract in accordance with conditions met with in practice.

It will now be apparentthat I vhave devised a novel and usefulinterlocking packing sleeve for rotary valves, which embodies thefeatures of advantageenumerated as desirable vin the statement of theinvention` and the above description, and while I have, in the presentinstance, shown and described typical embodiments thereof which willgive in practice satisfactory and reliable results, it is to beunderstood that the same,

are susceptible of modification in various particulars without departingfrom the spirit or scope of the invention or sacrificing.' any of itsadvantages. j

Having thus described my invention, what iI claim as new and desire tosecure by Letters Patent, isz-` l 1. The combination with a valve havingannular grooves therein, of a packing sleeve consisting of splitsections having inwardly extending flanges at each end forming packingrings adapted to interlock withthe walls of the grooves of the valve,said sleeve formjuxtaposed flanges of adjacent sections a apted tointerlock with each other.

2. The combination with a hollow valve section having at ing flangesextendinginto the grooves of.

.valve and forming a register with the ports of the valve and -providedwith afcut across both sides of the ports and with annular flanges toengage the grooves of the valve, and means to secure the sections to thevalve to permit relative movement with respect to the valve to Aprovidefor expansion and contraction of the sleeve opposite said port openingwith f Athe valve.

4. The combination with a 'valve casing,

of a hollow valve mounted therein, and a sectional packing sleevesurrounding the bushing between the valve and the valve casing, havinginwardly extending flanges at each end forming packing rings adapted tointerlock with the valve, and the juxtaposed flanges of adjacentsections being adapted to interlock with each other.

5. ,The combination with a valve casing, of a hollow valve within thecasing, antifriction devices on which said valve is mounted, said valvehaving ports through its periphery and provided with annular grooves onopposite sides of said ports, a packing sleeve surrounding said valveand forming a bushing between the valve and its casing and consisting ofsections, each its ends inwardly extendthe valve, and provided withports registering with the valve ports and split across the valve portstoform overlapping tongues.-

6. The combination with a valve casing having inlet and exhaust ports,of a valve within said casing, a packing sleeve surrounding said valveand consisting of interlocking sections, each ofsaid sections havingports to register with the valve ports, and having /a transverse cut onopposite sides of said ports and provided at each end with inwardlyextending flanges forming packing rings, each section having oppositeits ports an aperture through the wall of the section, and a fasteningdevice of less diameter than the aperturev and extending valve, saidsaid sections through such aperture and connected with the section,whereby relative expansion and contraction of the packing sleevesections and valve is permitted.

' 7. The combination with a valve casing,

of a valve, and a packing sleeve interlocked with the valve andsurrounding it to form a bushing between the valve casing and packingsleeve consisting of secof which is provided at one end with an inwardlyextending flange having an annular recess therein and provided at itsother end with an inwardly extending liange, the flange at one end o asection interlocking with the adjacent flange recess at tions, each theopposite end of the next section.

8. The combination with a valve casing having a centrally located inletport and provided with cylinder inlet and exhaust ports, of a hollowvalve having a centrally located inlet port and provided with outletports and with annular grooves on opposite sides-of the outlet ports,packing sleeves surrounding the valve and consisting of interlockingsections having at each end inwardly extending flanges forming packingrings which engage the walls of the valve grooves, and single splitrings engaging the walls of the valve grooves adjacent the inlet port.

9. A packing sleeve for rotary valves having its outer peripherycylindrical and consisting of sections having `ports and split acrossthe ports, each section having at each end inwardly extending flangesforming packing rings, of one section with the packing ring at ofanother section.

10. A packing sleeve for rotary valves having its outer peripherycylindrical and consisting of sections having ports and split across theports, each section having at each end inwardly extending flanges/orming packing rings, the packing ring at of one section being adaptedto interlock with the packing ring at the opposite end -of anothersection, and each section having apertures therethrough and locatedopposite theA port.

11. A sectional valve packing sleeve having its outer peripherycylindrical and its being adapted to interlock the opposite end inner.periphery eccentric, and provided with inwardly extending interlockinganges DE WITT S. DONAHAY.

the packing ring at the end` the end

